Ceph landmarks

Question 1

Tweed’s Triangle

Answer 1

FMPA
FMIA
IMPA

Question 2

ANB LOWER than range

Answer 2

-1 below

Question 3

ANB HIGHER than range

Answer 3

4/5 above

Question 4

ANB normal range

Answer 4

0-5/0-4
Class I

Question 5

ANB

Answer 5

A-Nasion-B

Question 6

Flat Mandibular Plane Angle

Answer 6

Short vertical dimension
Deep bite
ClassIII

Question 7

Steep Mandibular Plane Angle

Answer 7

Long vertical dimension- Long face syndrome

Anterior open bite: mouth breathing and tongue thrusting habit

Class II

Question 8

Frankfurt Mandibular Plane Angle normal range

Answer 8

22.3-34.5°

Question 9

Frankfurt Horizontal Plane + Mandibular Plane

Answer 9

Frankfurt Mandibular Plane Angle

Question 10

Planes that represent the anterior cranial base

Answer 10

Frankfurt Horizontal Plane
Sella-Nasion Plane - more accurate

Question 11

Sella to gnathion/pogonion

Answer 11

Y-axis plane

Question 12

Menton to Gonion forms what plane

Answer 12

Mandibular plane

Question 13

Nasion to pogonion forms what plane

Answer 13

Facial plane

Question 14

Nasion to sella forms what plane

Answer 14

Sella-Nasion Plane

Question 15

Porion to orbitale forms what plane

Answer 15

Frankfurt Horizontal Plane

Question 16

Point between Pogonion and Menton

Answer 16

Gnathion

Question 17

Most stable landmark in cephalometric radiograph

Answer 17

Sella

Question 18

MOST INFERIOR PORTION of the orbit

Answer 18

Orbitale

Question 19

Innermost point on contour of premaxilla between incisor and ANS

Answer 19

Point A / subspinale

Question 20

Lowest most posterior point on the mandible with the teeth in occlusion

Answer 20

Gonion (Go)/ angle of the mandible

Question 21

Most inferior part of mandibular symphysis

Answer 21

Menton (Me)

Question 22

Most anterior point of the contour of the chin

Answer 22

Pogonion (Pog)

Question 23

Innermost point on contour of mandible between incisor and bony chin

Answer 23

Point B/ supramentale

Question 24

The midpoint of SELLA TURCICA (Pituitary gland)

Answer 24

Sella (S)

Question 25

Most superior margin of the external auditory canal

Answer 25

Porion (Po)

Question 26

Junction of frontal bone and nasal bone

Answer 26

Nasion

Question 27

The point of INTERSECTION of the contour of the posterior cranial base and the posterior contour of the condylar process

Answer 27

Articulare (Ar)

Question 28

Most forward and highest point of the ANTERIOR MARGIN OF FORAMEN MAGNUM

Answer 28

Basion (Ba)

Question 29

Highest point in the concavity behind the OCCIPITAL CONDYLE

Answer 29

Bolton (Bo)